Which wire on the back of a 93 PCM is the tachometer signal output?

Or should I just hook up my shift light to one of the wires on the coil?

 

Not sure where it is on the back of the computer...however you can pick it up next to the tach filter on the drivers side of car. Its the white wire on the four wire plug that goes to the Ignition Control Module on the front of the head.

 

awesome thanx.

 

Is it the white wire with the black stripe or the plain white wire?

 

Gripe, not sure what color the wire in the factory harness is (the wire in my Accel DFI harness is solid white), but if the pin locations on the connector are lettered, it's "B"

 

Solid white.

 

Installed it.

Works perfectly.

Thanx again guys.